Melting-furnace.



A. FISHER` MELTING FUHNACE.

APPLIcATloN man nEc.4. me.

- Patented 1m12.191s;

HSHER. MELTING FURNACE. APPLlcAnoM mib Dsc. 4. ma)

1,258,666. Patented Mar. 12, 1918.

2 SHEETS-SHEET 2.

' UNTED STATES PATENTOFFICE.

y Specification of Letters Patent. Patented Malz 12k, 1918.`

' Application illed December 4, 1916. Serial No. 134,980.

portions thereof being shown in section illustrate the construction thereof. 1

Figa 2 is a plan view of the rightfhand To all twhom it may concern: Be it known that I, ALFRED Fismm, a cmzen of the United States of America, and 55` resident of Chicago, Cook county, Illinois, have invented a certain new and useful I mprovement in Melting-Furnaces, of which the following is a specification.

My invention relates to-furnaces for melting brass or other metals, and it-relates more especially to furnaces of this kind in -which the heat is `supplied by a combustion of liquid or aseous fuel,`

General y stated, the object of my invention is to provide a novel and improved construction whereby a furnace of this kind may be operated more conveniently and with less expense than heretofore, and which will tend to reduce the cost of brass or other metals.

Another object is to provide a novel and improved furnace of this kind in which the rece tacle in which the metals are melted can be tllted about a horizontally disposed axis to discharge the molten metal.

A further object is to provide a. novel and improved construction whereby, as the result of tapering the receptacle, the fire-proof lining thereof can be easily removed by simply turning the smaller end ofthe receptacle upward, thereby ermitting the 11ning to drop downward t rough the larger 4end of the receptacle.

Another object v1s to provlde a novel and improved construction whereby the heat of combustion is transmitted very rapidly to the lire-proof materials below the mass of metal, as well as to the to of the mass itself, so that the heat is distri uted more evenly and in a manner to accelerate the melting of the metal.

It is also an objectto provide certain details and features of construction and combinations tendin to increase the general eiliciency and esirability of a meltin furnace of this particular character.

To the foregoing and other useful ends, my invention consists in matters hereinafter set forth and claimed. r v

In the accompanying drawings Figure 1 is a side elevation of a furnace for' melting brass or other metals, embodyving' the principles of my invention, certain end portion of the structureshown mFig. 1. Fig. 3 isv a vertical transverse section on line 3-3 '1n Fig. 1. l

As thus illustrated, my invention comprises a horizontally disposed receptacle A, which is known as thedrum, and which is tapered from the point a in the length there- `of to its left-hand end which is closedby a head B provided with a 'trunnion-bearing b by which it is supported `for oscillatmg movement about a horizontal axis. This receptacle is straight, preferably, from the point a to the head Cf at the smaller end of the receptacle, which head is'preferably in the form of a casting provided with teeth bearing b is supported by an uprlght standard D, which may be a castingfanda simic' which, in effect, form a bevel-gear.` The lar standard 0r casting E is provided at the other end. The standard E is provided with rollers F mountedto rotate about horizontal axes, and these rollers engage the periphery f of the headC, whereby the receptacle ma be turned oroscillated about said axis. short spindle G is mounted in a suitable support g on an arm H'which rises from the support or standard E, and this spindle is provided with a loose bevel-pinion I which engages the bevel-gear e so that rotation of said pinion will oscillate or rotate the drum or rece tacle. For vthis purpose, la handwheel is loosely mounted on the outer end of the spindle G and suitably connected to said pinion, and by turning this'hand-wheel the pinion I can be rotated and the drum or receptacle will be tilted over in either direction. Near its larger end, said receptacle is rovided at the top thereof with an opening 4through which the products of combustion are exhausted, and through which the metal is introduced into the receptacle and afterward discharged therefrom. The interior of the receptacleor drum is lined with tapered' rings k, made of fire-clay` suitable heat-resisting material., he recepor .other I stantially lilrethe latter except that they arer straight I instead? of` being tapered.` v"'.lheie inwhich fuel oil is su lied'throll W i i O to a valve 0,'an'diiibm`the latlitdlair ienernezrle lisette; thc-Oil is meedeedp "namixed withthe idr, and the Hamefhus" produced is blown into the endufthe recap? tacle at the smaller end of the latter and 1n i` a." direction toward' the larger endy thereoc.`

` r a llame. or blast. of

if 2o suitable, known or approved character, is

arranged in position to blow a flamey through this` orifice L and into the interiory of the 1 :e'y ennemie..v .l-Seiclli burner isfpreferehlr the ykind vwhichv employs` air-pressure `supplied vthrough a pipeN to theplug-Yelve. n, Mld, l. t

' as"the "receptacle can -bey tilted back very from the latter tothe tapered nozzle m, and

As stated',` though, anyf Suitable ferm` of burner eenl bepemployed, which will produoe sufficient intensity to melt thelnetal.` v g.'

In practice, the metal to be yrr'leltedy is introducedeinto the, receptacle )rwdrumy A the. yopening K, andjisvallowedto n upon the file-clay lining k: kat the ,bot` I l torn ofthereceptaole. Thefburner is 4then started, and when the? flame orblasthas been .brought up gto theproper intensity, the'maximumcombustion'and greatest intensitr ofthe heat are Withinthe straight'` rtion p receptacle, thelining of whic portion is not y covered by. .the metal. The irepreofl` lin,-

rfcomunanieated@rapidlyr oneringk..l to

ingy highly heated, `and the heat is i' `aimthexgeoi `that Ftherheat thus generated l` lWorksjor creeps under the metal,xwherehy the latter is. subjected v`to .heat from 'below as well, aia-frenar abeveq-.The heat: .of `,the

flamelfirdirected'forward, against the mass v:ef-inetd, and the prodlets .off combos;tion1` "then upwardl and ont through the opening K, so that the metal becomes highly heated;

. but, at thesame time, as` stated, the'intense i heat; generatedy atthe .smaller `end'oi the `{retentacle ordi-um is conducted through the "fire-proof lining tothe bottom of the mass of metal, so that the heat is more evenly` dieF tributed," causing the metal to melt v formlyiv andin the re nired manner.

` rings g whichorm-the ining ofthe straight N1 .yj'Aszsoon as the metal is meltedsend in the portion Q are, it will be understood, of the same material as. the rings k, and aresub.-

rings .de not need tobe fastened to the drum or receptacle, butfare simply arrelugg'ed' tight.v .together vand heldin position bythe support which theyA aiord each other, endby reason ugh` toqprevent them` from ,tilting .n over'eidewi'se. Inadditiomtheheeds B and y 1 60,1;

' I ,the ireoeptacle, -endrl this IWill i tend 1 rings B11 tightly crowded together.

per or required condition, the-hand-wheel man' then heturned to, tilt the dr'ullav orare ofthe i the ceptacle A in either` direction, causing the molten metalv to ybe discharged from the openingy K, In this Way,tl1e. pouring op- Gratien-s fecilwted and .rendered very Sim-v ple,Y and` as much of the metal can be poured atvonegutirne as may be desired, inasmuch `more theflining of the recentac]e,y Thirteen bedoneafter the head B is removed, by

,intein *thereceptaclc with. its. smaller end upwar thneal owing thevrings" le and-,Q

to release themselves byptlieirr` own weight,

and to Afall downward through, the larger lendl of thevreceptecle.. In other words, the tapered she vpossible to slmply hang the `receptacle up by 0f the receptacle makes `it its Smaller endland yShake, the lining .ont ein, time` ,faclhteting the cleaning or re,- pmrlng of the f ua'naee.-y f

i Thee the receptacle Aris constructed@ end te provide a cembestienwhember rferthe fiance nii-the.le1ir1ee1v M and 'has its other end portion constructed to receive and .discharge the substance to bemelted., Prefy erably,.thereeeptac1eis tilted about a horwntall dispoeedegiis in orderto discharge mel' twmassfrem the epecmg provided in the top of the receptacle, and said recep- 'tacleia also'p'referably, tapered or funnelshaped, as shown endideseribed, es this is oundft'o -be advantageous in various Ways.

. Obviously, lmWbVer, the construction and rcd Without departing from the. spirit of -my'mnention-,iand I donut. limit myself to table, comprisingffa body taperingy trom its closedv end toward its burner end, they por ,tion adjacent, Said burner end being cylinico , modeoffoperatien may `be changed-.or `velposed, drum-.shaped receptacle, exiallyl rotai drical, means whereby,r said closed end may be removed to open the receptacle, and a ylining .of heatfresisting and heat-conducting vmaterial laid inpara1lcl,fringshaped sec"- tions,.to facilitate. the removal of the lining when the closed end is removed and the I i drum turned to vertitratll position, the, cylindrical `end portion of the drum Providing a combustion chamber from `which ythe heat ,is

conducted by said liningy `vrunde,rneayth the f 'metal renting on'said .sloping bottom. t l

2L A Structure esspecified in claimv Lsaidy l drum haring; an opening in the tapered por-` tion to receive the metal. and :through which the molten mass is poured olf after the metal longitudinal axis of rotation, said removable is melted, and the lining rings in said taend being adapted to crowd the rings tightly 10 pered portion being tapered to ft the intetogether, and means at the burner end to rorior thereof, with one or more of said rings tate said receptacle. r

5 recessed to provide said lining with an open- Signed by me at Chicago, Illinois, this ing opposite said opening in the drum. 27 th day of November, 1916.

3. A structure as specified in claim 1, a. trunnion on said removable end to form the ALFRED FISHER.

Uoples of this patent. may be obtained for ve cents each, by addressing the "Commissioner of Patents, Washington, D. 0. 

